The Madden–Julian oscillation (MJO) is the largest element of the intraseasonal (30- to 90-day) variability in the tropical atmosphere.

Dec 31, 2014 · The MJO consists of two parts, or phases: one is the enhanced rainfall (or convective) phase and the other is the suppressed rainfall phase. Strong MJO activity often dissects the planet into halves: one half within the enhanced convective phase and the other half in the suppressed convective phase.

6 days ago · The Madden-Julian Oscillation (MJO) is the major fluctuation in tropical weather on weekly to monthly timescales. The MJO can be characterised as an eastward moving 'pulse' of cloud and rainfall near the equator that typically recurs every 30 to 60 days.

Mar 7, 2025 · The Madden-Julian Oscillation (MJO) is known as the dominant mode of tropical intraseasonal variability and has an important role in the coupled-atmosphere system.

The MJO is characterized by eastward propagation of regions of enhanced and suppressed tropical rainfall, primarily over the Indian and Pacific Oceans. The anomalous rainfall is often first evident over the Indian

The MJO is often visualised on a circular plot, with movement shown in an anti-clockwise direction. Each point on the plot corresponds to a specific day and represents the most active area of the monsoon. This activity is determined by the amount of cloud generated by the monsoon trough. The monsoon trough is a little e of low pressure where ...

What is an MJO and how does it affect the weather? from Rol Madden and Paul Julian. Typically the convectively active stage of an MJO starts over the equatorial Indian Ocean and moves slowly eastward at 3-5 m/s toward the west and central Pacific Ocean.

The Madden-Julian Oscillation is characterised by an eastward spread of large regions of enhanced and suppressed tropical rainfall, mainly observed over the Indian and Pacific Ocean.

Why do we care about the MJO? •The MJO is intellectually important: there’s a lot that we don’t understand about it so it’s a great area to research. •The MJO has direct and indirect sensible weather impacts nearly everywhere around the globe. •The MJO has direct impacts on ENSO, tropical cyclone activity, other tropical waves, etc.

Sep 20, 2021 · The MJO produces a relatively coherent area of convection when traveling across the Indian Ocean and into the Pacific as far as the dateline. These are phases 2 through 7. Once past the dateline, the convection becomes stretched across favored parts of the Western hemisphere and Africa, so phases 1 and 8 cover a similar geographical expanse as ...